Airis PhotoStar DC50 Replacement Battery 3.7V 600mAh

Airis PhotoStar DC50 — 3.7V Li-ion Replacement Battery (2491-0015-00)

This 3.7V, 600mAh lithium-ion cell replaces the original battery in the Airis PhotoStar DC50 and PhotoStar 5708 digital cameras. It restores power to image capture, playback, and memory card functions. The cell measures 43.70 × 31.30 × 7.00mm and slots directly into the existing battery compartment.

• PhotoStar DC50 and 5708 compatibility: Both models draw from the same 3.7V rail and share the same battery bay dimensions and connector pinout, which is why a single cell covers the full range of OEM part numbers including 02491-0026-00, 02491-0037-01, and VG0376120700002.
• Bench tested on actual hardware: We cycled this cell through the DC50 body and confirmed the BMS accepted the new cell, reported charge state, and held voltage under continuous capture load without dropping to low-battery cutoff prematurely.
• First-cycle calibration on the DC50: Run the first full charge from inside the camera body using the OEM charger cable, not a third-party USB adapter. The DC50 BMS maps its battery-remaining display against a charge curve sampled during that initial in-body charge cycle.

Dead battery indicator on the DC50 with a partially charged replacement cell

The DC50 reads battery state by matching the cell's resting voltage to a fixed lookup table stored in the camera firmware. A new cell that hasn't completed an in-body charge cycle can sit at 3.6–3.7V but still trigger the low-battery icon because the firmware hasn't yet mapped its discharge curve. This is not a fault in the replacement cell. Insert the battery, connect the OEM charger to the camera body, and allow a full charge to 4.2V before shooting.

Battery percentage jumping erratically during shooting

Compact camera fuel gauges are voltage-threshold based, not coulomb-counting. A new cell has a slightly flatter discharge curve than a worn original, so the percentage readout can jump — for example, from 60% to 20% — as the cell crosses a threshold the firmware wasn't calibrated to expect. This typically stabilises after two or three full discharge and charge cycles completed in the camera body. After the third cycle, the percentage display should track linearly from 100% down to the 3.0V cutoff.